TSC 800 TRANSFER SWITCH CONTROLLER
PM 049 REV 9 06/04/24 Thomson Technology
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When the “AUTO” retransfer mode is selected, the load will be automatically re-transferred
back to the original source and does not require operator intervention.
When the “MANUAL” retransfer mode is selected, a re-transfer back to the original source will
not occur until the LAMP TEST function is activated and alarm is reset by operator
intervention.
For further details on Phase Balance programming refer to section 7.3.17.
NOTE: When in the MANUAL RETRANSFER mode, if the alternate source fails, the alarm
lockout will not be bypassed inhibiting the load to re-transfer back to the original source even
if within limits. The reason the re-transfer is inhibited is phase unbalance is generally only
detected when load is applied to the source and the condition will appear to clear when the
load is removed, as such allowing a re-transfer to the failed source previously determined to
have a phase balance fault will only result in multiple unnecessary transfers of the load
between sources. Retransfer is set to lockout and requires operator intervention.
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